Hi, i found out that in recent versions of Dolphin emulator, enabling "Audio Streching" causes the sound to be "Lagging" even when the game is full speed. The version tested was 5.0- 9806 and i couldn't find which version began this glitch. The audio Beckend tested were Cubeb and Xaudio2.
I have tested in The Legend of Zelda Wind Waker (NTSC-U) and Super Mario Bros 3.
Here is a video showing the problem:https://youtu.be/IftwsTJEtwc